Method of and apparatus for shaping plates or pipe-skelp.



A. M. SAUNDERS.

METHOD OF AND APPARATUS FOR SHAPING PLATES 0R PIPE SKELP.

APPLICATION FILED OCT 20. 1910 Patented Dec. 2, 1914.

3SHEBTS-SHBET l.

INVENTOR WITNESSES NORRIS PFTFR lmr LITHQ. WASWMJTON. D C

A. M. SAUNDERS.

METHOD OF AND APPARATUS FOR SHAPING PLATES 0R PIPE SKELP.

APPLICATION FILED OCT. 20, 1910. I

Patented Dec. 22, 1914.

3 BHEETk-SHBET 2.

INVENTOR WITNESSES NORRIS PETERS. |NC., LITHD. WASHINGTON. D. C

A. M. SAUNDERS.

METHOD OF AND APPARATUS FOR: SHAPING PLATES 0R PIPE SKELP.

ATPLIUATIONFILED OOT.20.1910. 1 121 670, Patented Dec. 22, 1914.

A 3 ,QEEE'IS-SHEIITJL eueus'rns M. sAnn'nEn-s, on ntcxnnseonn:rnnnsiznvanra assidnoza i'no an,

NATIONAL TUBE COMPANY, oaPr TseUne-n; PENNSYLVANIA, acorarm e'lflon OF NEW JERSEY. 1

. METHOD or AND nrPARATUs-noesneiflneP ATES. wizards-smi e.

meters.

Applicationifiled Qctober 20, 1910'. seriai Na rolled metal plates or pipe skelp by scarfing and bending preparatory to later heating and welding operations inthe manufacture of lapweld pipes or tubes.

Heretotore, in making lapweld pipe the pipe slielp or plates have been started in one operation, and. the scari'ed plates then drawn tl'irough a bending die in which they are bent into shape preparatory to heating and welding into pipes or tubes. Th'e'scarfing rollsusually have been located at a point remote from the drawing bench; on which the later bending operations were performed. in other cases, the draw bench and bending dies have been located at a distance from the scarfing rolls greater than the length of the'longest plate or pipe sirelp subjected to the bending and scariing operations so that the longitudinal edges of the plates or skelp have always been scarfed before the bending operation is started and the starting and bending effected in two entirely separate and independentoperations.

One object of this invention is to provide an improved method of shaping the plates or pipe skelp in a continuous operation, preparatory to heating and welding the scarfed and bent plates into tubes or pipes,

in which the scarfing and bending operations are carried out simultaneously upon different portions of each pipe slzelp or i l provided with agdoonway r: op ning tli plate. v e

Another DbJQCt of this lnve'nt on is to provide improved apparatus for use/1n car rying out the steps of sha ing the'plates or pipe skelp comprising my improved method of continuous and simultaneous operation" both inserted and \YltlKl lfiUUlillllQllfl upon the plates and pipe skelpu A further ob ect of this nvention is to provide av novel method of operating the searfing rolls and bending dies-and then.

aim-san mechanisms and to provide in);

-Speciiicatio1i ortettis e te ef p jgg g; 3

fisia longitudinal side elevation,partly section, showing apparatus constructed ,;anjd

and adapted" for use 51111 031. 7 steps of the improved lneth'od' fqi'min of this invention. "Fig. 2-is a plan: of; apparatus shown in Fig-.lmrEi iQ Bis-an end elevation sho'wing tl1e-scarfingwells "furnace in which the plates orflppe-fsh the entire width ot the turnac -fr'ont of this end of the gtfurn.

proved means by which my: novel "me h'od 1s carried out in accordance ithi thisEinvention in effecting the shaping operations.

.A' still further object ofsthis'aiinlvlention -is to provide apparatus for shaping the plates or p' peskelp constructed-and ariinnged iin ainannenwhich Will be more f-ully de scribed hereinafter; c

In the accompanying drawingsgiE-i arranged in-accordance with y: invent on,

torming'part of this apparatus. 4; is

a diagrammatic view showing theaelectadczih connections to the motors formin thegpan ncular driving apparatus. shown end-griescribed. Fig: is 21- S6Ctl01liil 011d,YlQWIQf a p1pe-skelp-o1" plate before-the scar-ling ope ratit'n'n Fig. 6 is a,similanseetional' ench edges of the platesot' Fig'.,-5i aresczirfed in *passing through .-tl1e scariing; rolls -.forming part of the'apparatus[illustrated inronnection with th'isinvention. Fig. T isa sectional end view of a 'searfed pipeskelp ,or plate as bent-1n passing. after being scarfed, over the mandrel and thnough: the bending dieson the draw bench formingpart vof the apparatus.

In these drawings, 2 idesignatesga he: ting are withdrawn in passing ,fro n the furnace into the biteof the scarh'ngrollsa P referably, each end of the heating; furnace 1s opening in such case. "The opening 2; extends tor sul an oorway 3 in its endthrough which. the heated plates scarfing rolls 4 and 5 which are mounted in housings 6. These housings are adjustably secured upon the shoes 7 forming part of the base plate 8, which is provided with rollers or wheels 9, rotatably mounted in bearings 10 on the lower side of the base plate 8 and a curved track 11 is provided beneath the base plate 8, upon which the rollers 9"are supported and turn when the scarfing rolls are moved across the front of the furnace into different positions in front of the opening 'ordoorway 3 of the furnace.

In front and on the discharge side of the scarfing rolls is a draw-bench 12 which also is provided with rollers 13 which travel upon the track 14, the draw bench 12 being connected by the extension or arm 15 with the base plate 8 of the scarfing rolls so as to move with the scarfing rolls and base plate upon which the scarfing rolls are mounted.

' The draw-bench 12 is provided with an endless chain 16 which passes around the idler sprocket wheel 17 and the driving sprocket wheel 18. The sprocket wheels are mounted upon shafts 19 which are secured in bearings 20 on opposite ends of the draw bench. The shaft 19 of the driving sprocket wheel 18 is connected by means of the coupling boxes 21, 21, and spindle 22, with a spur gear 23 mounted on the, shaft 24 which is secured in the bearings 25 forming part of a base plate 26 upon which the driving motor 27 also is mounted. The motor 27 is provided with a spur pinion which meshes with and drives the spur gear on the shaft 24. A casing 24 is shown surrounding these gears for the purposeof safety.

Idler wheels 28 are provided at suitable intervals in the length of the draw bench on the under side of this bench to support and take up the slack in the draw chain 16 and prevent the lower strand of the chain dragging upon the floor beneath the draw bench.

Th draw bench is pivoted at its outer end, so as to permit the rear end to swing across the front of the heating furnace, the construction of the coupling boxes 21 and the spindle 22 permitting of the necessary swinging movement of the end of the draw bench in moving the scarfing rolls from one side to the other of the door 3 in the heating furnace 2, in the operation of the apparatus.

A platform 29 is suspended from one side of the draw bench upon which the tongsboy stands in manipulating the tongs in carrying out the plate bending operations.

The base plate 8 for the scarfing rolls is also provided with a driving motor 30 which is connected by the slow-down gears 31 and 32 to the scarfingrolls 4 and 5 to positively drive these rolls in scarfing the plates or teeth which mesh with the teeth in the pin ion 34 which is mounted in bearings on one end of the base plate 8. The shaft 36 upon which the spur gear 34 is mounted is provided with a spur'gear 37 which meshes with the spur pinion 39 on the counter-shaft 40, this shaft in turn being connected by the pinion 41 with the spur gear 42 on the armature of the motor43 which is also mounted upon the base plate 8. This motor 43 is provided to move the draw bench 12 and the scarfing rolls in front of the heating furnace 2, to bring the scarfing rolls opposite plates located in different parts of the furnace 2. The platform 29 is also supported upon and is movable with the, draw bench and the base plate for the scarfing emerge from the scarfing rolls and prevents buckling of the heated skeln or plates.

In front of the scarfing rollsand the idler roller 47 is a bending guide 48 having an upwardly extending arm 49 to which a lever 50 is pivoted. The lever 50 has a mandrel 51 secured on one end, the opposite end of this lever being provided with a counterweight 52 for counter-balancing the mandrel 51.

Mounted on the track provided on the top surface of the draw bench 12 are the tongs 53 by which the end of the scarfed plates are grasped and drawn through the bending die 48. The tongs 53 are provided with wheels 54 and a lever 55 is secured at one end to the tongs, the opposite end of this lever 55 having a projection 56 which is adapted to enter between the links of the draw chain 16 in operating the tongs by means of this chain. A handle 57 by which this lever is manipulated by the tongs-boy is also provided on the lever 55, as is best shown in Fig. 1.

Between the scarfing rolls 4 and 5 andthe bending dies 48 isa trigger formed of a bent lever 58 which is pivoted to a support carried upon the extension or arnrlii'by whichthe draw bench 12 is connected to the base plate 8. One end of this lever is arranged to project upwardly through a suitable opening in the bottom of the guide 45 so as to be contacted by the advancing en; and the under surface of the scarfed plates or pipe skelp as they emerge from the scarfing rolls. The other end of the bent lever 58 or trigger is constructed so as to make and break connection with one terminal 60 grantee ex! soarfingtrolls are 'driven by means of which he;..chain 16 'on-the draw n hYi'si-actuate ise ilifdnlponvthetroller ihatingapush zafbuttons 62 and: 63 by I =means @of' ifwhich the: .a'notors' 27 and -30 arestopped-l and istarted in the operation of; the- 'scarfinggandiabend-ingapparatus;- a

nthe operationaeffimyimproved appar'atus; the jpl'atesv are placed in the furnace '2 i are heated to the required temperature; Thelwplatess arei then successively removed fil icjigficicireuitaleadingrtoiithd; iadtorg .th

'1aaa.:2asaaan:. v s

V benchl2 intdposi'tion to againf b ef brought into engagement with' theforward end of from; the -turnaceintothe bite of the scarfi iinggrolls the guides-44 directing the forwardiendgof the plates into the bite of the rolls; .The. rolls', whi ch are positively driventhrough =the -'gearin"g;- connecting the rolls with the motel- 30, c'ause' the plate to pass :forwardlys' Where-the forward end of the plate" being "scarfed' engages with the upwardly; projecting {end of the pivoted lever 58, thiS endibfthedVelf is depressed and its opposite endliited -'orraised, so as to break the 7 electrical circuit to the motor 30, stoppingthis ':,motor,'-, and the tscarfing rolls. The momentumi off, the revolvingrolls, with P1-Pe-S e 1 afe1 e th .v ne name y upon the track on the top L of the draw and then'bending the scarfedportions of the plates into" the required shape for welding into. a pipe mtube, the bending operation upon part of the pipe skelpbeingpei'formed snn'ultaneouslywith the scarfing operation uponanother portion thereof, a y

The advantagesjof "nvention will be apparent to those skilled in the art.' The apparatus simple and is easily kept in re-.

pair. In using my improved apparatus in.

fat' off' the scarfedpla'te traveling fors wardly 'between the scarfing r0lls,""brings.

I .the; forward end of the plates into close" bending guide 4 8,which is mounted'on one.

proximity witlr the-receiving end of the "end of the 'dra'w bench '12. The tongs-boy,

fiwho is upon the suspended platform 29', then moves the tongs 53 backwardly :until. the end if these tongs projects through the'bending die 48 and engages with the forward end of'the partly scarfed plate, the forward movement of the plate then being stopped, or nearly so. The tongs-boy then moves the goufiter-Weighted end of the plvoted lever 50 so as to bring the mandrel 51 into position within the bending guide 48 and simultaneou'sly therewith places the projection 56 on theend of the lever 55 which is connect- Hhbuttont? on the controller which is mounted fu'pon the platform 29 1s then pressed thisoperation completing the elecgaicaeirmiit through the motor 27 and the enrathr 61 so as to start this motor in operation and positively drive the endless chain 16. The same movement of the but I tgin or switch 63 again starts the scarfing frills driving motor '30 into operation and the plate is scarfed and the plate as scarfed is drawn through the bending die so, as to bend the flat scarfed plate into the approximately cylindrical shape fshown 1n Fig. 7. When the plate or pipe- ,f 'kelp is entirely drawn through the bendtug dies 48 the tongs-boy, who moves along .ed by one end. to-the tongs'53, into one of the spacesin the links of the draw chain 16.

carrying outthe steps of my novel method: the successive plates or pipe skelp' are simultaneously sc arfed and bentintothe desired shape instead of first scarfing the plates one operation and, after the completion of the scarfing operation, bending the plates in preparation for'the later weldingopera tions. 'lVhen'the plates'being operated upon are partly scar-ted, the scarfing mechanism is automatically broughtto'rest and remains inoperative until the tongs have been attached to the partly scarfed plate when the scarfing operation is completed simultaneously with the operation of bending the scarfed plates.

Modifications in the construction and arrangement of the parts may be made without departing from my invention as defined in the claims. 1

The type'oi' motor for driving the different parts oi the apparatus may be modified and the means for stopping and starting the driving motors may be changed and other modifications may be made.

I claim:

1. Apparatus for shaping pipe-skelp preparatory to welding into pipes or tubes, comprising scarfing rolls, means for driving said rolls, a draw bench in front of said scariing rolls having a bending die thereon, and means on the draw bench for drawing the slrelp through the bending die, said bending die and scnrfing rolls being arranged to operate simultaneously on lengthwise separate portions of the pipe skelp in searfing and bending said skelp.

Apparatus for shaping pipe-skelp preparatory to welding into pipes or tubes, comprising scarfing rolls, means for driving said rolls, a draw bench in front of said scarfing rol ls having a bending die thereon, and means actuated by the scar-fed skelp for automatically stopping the scarfing rolls and interrupting the scarfing operation to permit attachment of partly scarfed skelp to the draw bench to thereby permit simultaneous engagement of the scarfingrolls and bending die on lengthwise separate portions of the skelp.

3. Apparatus for shaping, pipe-skelp or plates preparatory to welding into pipes or tubes comprising scarfing rolls, meansfor driving the scarfing rolls, a draw bench havinga bending die in front of said scarfing rolls, means on the bench for drawing the scarfed plates or pipe-skelp through the ending die and means inthe path of the scarfed plate by which the scarfing rolls driving mechanism is stopped and the scarfing' operation interrupted, while the partly scar-fed plate is being attached to the drawing mechanism on the draw bench.

'4. Apparatus for shaping pipe-skelp or plates preparatory-to welding into pipes or tubes comprising .scarfing rolls, means for driving the scarfing rolls, a draw bench having abending die in front of said scarfing rolls, means on the bench for drawing the scarfed plates or pipe skelp through the bending die and means in the path of the scarfed plate by which the scarfing rolls driving mechanism is stoppedand the scarfing operation interrupted, while the partly scarfed plate is being attached to the drawing mechanism on the draw bench, and

means for simultaneously starting the draw bench drawing mechanism and scarfing rolls after securing the partly scarfed plate to the draw bench drawing mechanism.

5. Apparatus for shaping pipe-skelp or plates preparatory to welding into pipes or tubes com-prisin scarfing rolls, means for driving the scar g rolls, a draw bench havmg a bending die in front of 'said scarfing ing mechanism on the draw bench, and means for starting the draw bench drawin attached to the drawmechanism aftersecuring the partly scarfed plate thereto and completing the scarfing and bending operations.

6. In the manufacture of pipes and tubes thesteps consisting in partly scarfing and,

heating skelp, interrupting the scarfing operation and attaching the' partly scarfed skelp to a draw bench and then drawing the skelp through a bending die to thereby operate simultaneously upon lengthwise separate portions of the skelp and bend the scarfed part of the skelp while completing the scarfing operation on the unscarfed portions thereof. In testimony whereof, I" have hereunto set my hand.

AUGUSTUS M. SAUNDERS. Witnesses:

C. H. STARR, JAB. P. DAVIS. 

